Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent
Chars and activated chars obtained from a low-rank coal and doped with vanadium compounds (V2O5 and NH4VO3) and petroleum coke ash, PCA, (Main metal components: V, Fe and Ni) have been tested as catalytic sorbents for NO reduction. The reduction tests have been carried out in the presence of oxygen...
| Autores: | , , , , , |
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2004 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/344336 |
| Acesso em linha: | http://hdl.handle.net/10261/344336 |
| Access Level: | acceso abierto |
| Palavra-chave: | Selective catalytic reduction of NOx Carbon-supported vanadium catalysts Petroleum coke ash for selective catalytic reduction catalysts |
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Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agentLázaro Elorri, María JesúsGálvez Parruca, María ElenaSuelves Laiglesia, IsabelMoliner Álvarez, RafaelVassilev, Stanislav V.Braekman-Danheux, C.Selective catalytic reduction of NOxCarbon-supported vanadium catalystsPetroleum coke ash for selective catalytic reduction catalystsChars and activated chars obtained from a low-rank coal and doped with vanadium compounds (V2O5 and NH4VO3) and petroleum coke ash, PCA, (Main metal components: V, Fe and Ni) have been tested as catalytic sorbents for NO reduction. The reduction tests have been carried out in the presence of oxygen with the addition of ammonia as reducing agent. The sorbents prepared have shown to be active for NO reduction at low-temperature (150 °C). Higher reduction efficiencies than with the unloaded not activated char have been achieved. The sorbents most efficient are those prepared with activated chars. Doping with vanadium compounds significantly upgrades the behaviour of the activated char. For the samples prepared with PCA, slightly lower NO conversions are observed but it has been shown that PCA is perspective for producing transition metals doped activated carbons.Surface Chemistry affects the sample behaviour. In general terms, the reduction efficiency is promoted by a low acidic character of the surface. However, it cannot be stated that the highest efficiency corresponds to the samples with the lowest CO2/CO ratio. It reveals that the overall behaviour of the samples responds to a combined effect of the chemical surface of the carbon support and the catalytic activity of the vanadia loaded. The results obtained show that the pathway of reduction when ammonia is used corresponds to a catalytic heterogeneous reaction, in contrast to the uncatalized high temperature (350 °C) reduction observed when ammonia was not used as reducing agent.This research was financed by the EC (Contract 7220-EC/042) and by AMB99-1111. The authors wish to thank the ECSC (Coal Conversion Committee) and Spanish CICYT for their support. Stanislav Vassilev would also like to express his gratitude to the ECSC that allowed him to study at the ULB (Brussels, Belgium).Peer reviewedElsevierEuropean CommissionComisión Interministerial de Ciencia y Tecnología, CICYT (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242004info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/344336reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.fuel.2003.09.004Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3443362026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent |
| title |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent |
| spellingShingle |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent Lázaro Elorri, María Jesús Selective catalytic reduction of NOx Carbon-supported vanadium catalysts Petroleum coke ash for selective catalytic reduction catalysts |
| title_short |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent |
| title_full |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent |
| title_fullStr |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent |
| title_full_unstemmed |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent |
| title_sort |
Low cost catalytic sorbents for NOx reduction. 3. NO reduction tests using NH3 as reducing agent |
| dc.creator.none.fl_str_mv |
Lázaro Elorri, María Jesús Gálvez Parruca, María Elena Suelves Laiglesia, Isabel Moliner Álvarez, Rafael Vassilev, Stanislav V. Braekman-Danheux, C. |
| author |
Lázaro Elorri, María Jesús |
| author_facet |
Lázaro Elorri, María Jesús Gálvez Parruca, María Elena Suelves Laiglesia, Isabel Moliner Álvarez, Rafael Vassilev, Stanislav V. Braekman-Danheux, C. |
| author_role |
author |
| author2 |
Gálvez Parruca, María Elena Suelves Laiglesia, Isabel Moliner Álvarez, Rafael Vassilev, Stanislav V. Braekman-Danheux, C. |
| author2_role |
author author author author author |
| dc.contributor.none.fl_str_mv |
European Commission Comisión Interministerial de Ciencia y Tecnología, CICYT (España) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Selective catalytic reduction of NOx Carbon-supported vanadium catalysts Petroleum coke ash for selective catalytic reduction catalysts |
| topic |
Selective catalytic reduction of NOx Carbon-supported vanadium catalysts Petroleum coke ash for selective catalytic reduction catalysts |
| description |
Chars and activated chars obtained from a low-rank coal and doped with vanadium compounds (V2O5 and NH4VO3) and petroleum coke ash, PCA, (Main metal components: V, Fe and Ni) have been tested as catalytic sorbents for NO reduction. The reduction tests have been carried out in the presence of oxygen with the addition of ammonia as reducing agent. The sorbents prepared have shown to be active for NO reduction at low-temperature (150 °C). Higher reduction efficiencies than with the unloaded not activated char have been achieved. The sorbents most efficient are those prepared with activated chars. Doping with vanadium compounds significantly upgrades the behaviour of the activated char. For the samples prepared with PCA, slightly lower NO conversions are observed but it has been shown that PCA is perspective for producing transition metals doped activated carbons. |
| publishDate |
2004 |
| dc.date.none.fl_str_mv |
2004 2024 2024 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Postprint info:eu-repo/semantics/acceptedVersion |
| format |
article |
| status_str |
acceptedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/344336 |
| url |
http://hdl.handle.net/10261/344336 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
https://doi.org/10.1016/j.fuel.2003.09.004 Sí |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
| dc.source.none.fl_str_mv |
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869423905948565504 |
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15.812429 |